He is a big fan of pulp fiction/American private-eye stories. He writes very tough, amoral tales of urban life with very few good cops, and usually it is the villains who are the heroes of his books. It is a very interesting take.
Music is a good shorthand way to delineate character. If you want to tell the reader a lot about a character in a small space, just tell them what their musical taste is. You'll get their age, their background, whether they're gregarious or a loner.
Music is a good shorthand way to delineate character,